551289387 has 8 divisors (see below), whose sum is σ = 801875520. Its totient is φ = 334114760.

The previous prime is 551289353. The next prime is 551289397. The reversal of 551289387 is 783982155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 551289387 - 2⁷ = 551289259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (551289397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8352837 + ... + 8352902.

It is an arithmetic number, because the mean of its divisors is an integer number (100234440).

Almost surely, 2^551289387 is an apocalyptic number.

551289387 is a deficient number, since it is larger than the sum of its proper divisors (250586133).

551289387 is a wasteful number, since it uses less digits than its factorization.

551289387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16705753.

The product of its digits is 604800, while the sum is 48.

The square root of 551289387 is about 23479.5525298077. The cubic root of 551289387 is about 819.9610268013.

The spelling of 551289387 in words is "five hundred fifty-one million, two hundred eighty-nine thousand, three hundred eighty-seven".